Replace --enable-static-pie with --disable-default-pie

Build glibc programs and tests as PIE by default and enable static-pie
automatically if the architecture and toolchain supports it.

Also add a new configuration option --disable-default-pie to prevent
building programs as PIE.

Only the following architectures now have PIE disabled by default
because they do not work at the moment.  hppa, ia64, alpha and csky
don't work because the linker is unable to handle a pcrel relocation
generated from PIE objects.  The microblaze compiler is currently
failing with an ICE.  GNU hurd tries to enable static-pie, which does
not work and hence fails.  All these targets have default PIE disabled
at the moment and I have left it to the target maintainers to enable PIE
on their targets.

build-many-glibcs runs clean for all targets.  I also tested x86_64 on
Fedora and Ubuntu, to verify that the default build as well as
--disable-default-pie work as expected with both system toolchains.

Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

INSTALL

@@ -116,16 +116,14 @@ if 'CFLAGS' is specified it must enable optimization.  For example:
      systems support shared libraries; you need ELF support and
      (currently) the GNU linker.
 
-'--enable-static-pie'
-     Enable static position independent executable (static PIE) support.
-     Static PIE is similar to static executable, but can be loaded at
-     any address without help from a dynamic linker.  All static
-     programs as well as static tests are built as static PIE, except
-     for those marked with no-pie.  The resulting glibc can be used with
-     the GCC option, -static-pie, which is available with GCC 8 or
-     above, to create static PIE. This option also implies that glibc
-     programs and tests are created as dynamic position independent
-     executables (PIE) by default.
+'--disable-default-pie'
+     Don't build glibc programs and the testsuite as position
+     independent executables (PIE). By default, glibc programs and tests
+     are created as position independent executables on targets that
+     support it.  If the toolchain and architecture support it, static
+     executables are built as static PIE and the resulting glibc can be
+     used with the GCC option, -static-pie, which is available with GCC
+     8 or above, to create static PIE.
 
 '--enable-cet'
 '--enable-cet=permissive'

Makeconfig

@@ -1,4 +1,5 @@
 # Copyright (C) 1991-2021 Free Software Foundation, Inc.
+# Copyright (C) The GNU Toolchain Authors.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -376,19 +377,24 @@ LDFLAGS.so += $(hashstyle-LDFLAGS)
 LDFLAGS-rtld += $(hashstyle-LDFLAGS)
 endif
 
-ifeq (yes,$(enable-static-pie))
+ifeq (no,$(build-pie-default))
+pie-default = $(no-pie-ccflag)
+else # build-pie-default
 pic-default = -DPIC
 # Compile libc.a and libc_p.a with -fPIE/-fpie for static PIE.
 pie-default = $(pie-ccflag)
+
+ifeq (yes,$(enable-static-pie))
 ifeq (yes,$(have-static-pie))
-default-pie-ldflag = -static-pie
+static-pie-ldflag = -static-pie
 else
 # Static PIE can't have dynamic relocations in read-only segments since
 # static PIE is mapped into memory by kernel.  --eh-frame-hdr is needed
 # for PIE to support exception.
-default-pie-ldflag = -Wl,-pie,--no-dynamic-linker,--eh-frame-hdr,-z,text
-endif
-endif
+static-pie-ldflag = -Wl,-pie,--no-dynamic-linker,--eh-frame-hdr,-z,text
+endif # have-static-pie
+endif # enable-static-pie
+endif # build-pie-default
 
 # If lazy relocations are disabled, add the -z now flag.  Use
 # LDFLAGS-lib.so instead of LDFLAGS.so, to avoid adding the flag to
@@ -444,7 +450,7 @@ endif
 # Command for statically linking programs with the C library.
 ifndef +link-static
 +link-static-before-inputs = -nostdlib -nostartfiles -static \
-	      $(if $($(@F)-no-pie),$(no-pie-ldflag),$(default-pie-ldflag)) \
+	      $(if $($(@F)-no-pie),$(no-pie-ldflag),$(static-pie-ldflag)) \
 	      $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F))  \
 	      $(firstword $(CRT-$(@F)) $(csu-objpfx)$(real-static-start-installed-name)) \
 	      $(+preinit) $(+prectorT)
@@ -479,7 +485,7 @@ ifeq (yes,$(build-pie-default))
 +link-tests-after-inputs = $(link-libc-tests) $(+link-pie-after-libc)
 +link-printers-tests = $(+link-pie-printers-tests)
 else  # not build-pie-default
-+link-before-inputs = -nostdlib -nostartfiles \
++link-before-inputs = -nostdlib -nostartfiles $(no-pie-ldflag) \
 	      $(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
 	      $(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
 	      $(firstword $(CRT-$(@F)) $(csu-objpfx)$(start-installed-name)) \
@@ -1040,6 +1046,7 @@ PIC-ccflag = -fPIC
 endif
 # This can be changed by a sysdep makefile
 pie-ccflag = -fpie
+no-pie-ccflag = -fno-pie
 # This one should always stay like this unless there is a very good reason.
 PIE-ccflag = -fPIE
 ifeq (yes,$(build-profile))

NEWS

@@ -86,6 +86,15 @@ Major new features:
 * A symbolic link to the dynamic linker is now installed under
   /usr/bin/ld.so (or more precisely, '${bindir}/ld.so').
 
+* All programs and the testsuite in glibc are now built as position independent
+  executables (PIE) by default on toolchains and architectures that support it.
+  Further, if the toolchain and architecture supports it, even static programs
+  are built as PIE and the resultant glibc can be used to build static PIE
+  executables.  A new option --disable-default-pie has been added to disable
+  this behavior and get a non-PIE build.  This option replaces
+  --enable-static-pie, which no longer has any effect on the build
+  configuration.
+
 Deprecated and removed features, and other changes affecting compatibility:
 
 * The r_version update in the debugger interface makes the glibc binary
@@ -98,6 +107,10 @@ Deprecated and removed features, and other changes affecting compatibility:
 
 * Intel MPX support (lazy PLT, ld.so profile, and LD_AUDIT) has been removed.
 
+* The --enable-static-pie option is no longer available.  The glibc build
+  configuration script now automatically detects static-pie support in the
+  toolchain and architecture and enables it if available.
+
 Changes to build and runtime requirements:
 
   [Add changes to build and runtime requirements here]

config.h.in

@@ -268,6 +268,9 @@
 /* Build glibc with tunables support.  */
 #define HAVE_TUNABLES 0
 
+/* Define if PIE is unsupported.  */
+#undef PIE_UNSUPPORTED
+
 /* Define if static PIE is supported.  */
 #undef SUPPORT_STATIC_PIE
 

config.make.in

@@ -90,9 +90,6 @@ static-nss-crypt = @libc_cv_static_nss_crypt@
 
 # Configuration options.
 build-shared = @shared@
-build-pic-default= @libc_cv_pic_default@
-build-pie-default= @libc_cv_pie_default@
-cc-pie-default= @libc_cv_cc_pie_default@
 build-profile = @profile@
 build-static-nss = @static_nss@
 cross-compiling = @cross_compiling@

configure

@@ -596,9 +596,6 @@ DEFINES
 static_nss
 profile
 libc_cv_multidir
-libc_cv_pie_default
-libc_cv_cc_pie_default
-libc_cv_pic_default
 shared
 static
 ldd_rewrite_script
@@ -768,7 +765,7 @@ with_timeoutfactor
 enable_sanity_checks
 enable_shared
 enable_profile
-enable_static_pie
+enable_default_pie
 enable_timezone_tools
 enable_hardcoded_path_in_tests
 enable_hidden_plt
@@ -1424,8 +1421,8 @@ Optional Features:
                           in special situations) [default=yes]
   --enable-shared         build shared library [default=yes if GNU ld]
   --enable-profile        build profiled library [default=no]
-  --enable-static-pie     enable static PIE support and use it in the
-                          testsuite [default=no]
+  --disable-default-pie   Do not build glibc programs and the testsuite as PIE
+                          [default=no]
   --disable-timezone-tools
                           do not install timezone tools [default=install]
   --enable-hardcoded-path-in-tests
@@ -3424,11 +3421,11 @@ else
   profile=no
 fi
 
-# Check whether --enable-static-pie was given.
-if test "${enable_static_pie+set}" = set; then :
-  enableval=$enable_static_pie; static_pie=$enableval
+# Check whether --enable-default-pie was given.
+if test "${enable_default_pie+set}" = set; then :
+  enableval=$enable_default_pie; default_pie=$enableval
 else
-  static_pie=no
+  default_pie=yes
 fi
 
 # Check whether --enable-timezone-tools was given.
@@ -6975,7 +6972,8 @@ rm -f conftest.*
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_pic_default" >&5
 $as_echo "$libc_cv_pic_default" >&6; }
-
+config_vars="$config_vars
+build-pic-default = $libc_cv_pic_default"
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -fPIE is default" >&5
 $as_echo_n "checking whether -fPIE is default... " >&6; }
@@ -6995,17 +6993,37 @@ rm -f conftest.*
 fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_pie_default" >&5
 $as_echo "$libc_cv_cc_pie_default" >&6; }
-libc_cv_pie_default=$libc_cv_cc_pie_default
+config_vars="$config_vars
+cc-pie-default = $libc_cv_cc_pie_default"
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can build programs as PIE" >&5
+$as_echo_n "checking if we can build programs as PIE... " >&6; }
+if test "x$default_pie" != xno; then
+  # Disable build-pie-default if target does not support it.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef PIE_UNSUPPORTED
+# error PIE is not supported
+#endif
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libc_cv_pie_default=yes
+else
+  libc_cv_pie_default=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_pie_default" >&5
+$as_echo "$libc_cv_pie_default" >&6; }
+config_vars="$config_vars
+build-pie-default = $libc_cv_pie_default"
 
-
-# Set the `multidir' variable by grabbing the variable from the compiler.
-# We do it once and save the result in a generated makefile.
-libc_cv_multidir=`${CC-cc} $CFLAGS $CPPFLAGS -print-multi-directory`
-
-
-if test "$static_pie" = yes; then
-  # Check target support for static PIE
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can build static PIE programs" >&5
+$as_echo_n "checking if we can build static PIE programs... " >&6; }
+libc_cv_static_pie=$libc_cv_pie_default
+if test "x$libc_cv_pie_default" != xno \
+   -a "$libc_cv_no_dynamic_linker" = yes; then
+  # Enable static-pie if available
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #ifndef SUPPORT_STATIC_PIE
@@ -7013,22 +7031,25 @@ if test "$static_pie" = yes; then
 #endif
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
-
+  libc_cv_static_pie=yes
 else
-  as_fn_error $? "the architecture does not support static PIE" "$LINENO" 5
+  libc_cv_static_pie=no
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-  # The linker must support --no-dynamic-linker.
-  if test "$libc_cv_no_dynamic_linker" != yes; then
-    as_fn_error $? "linker support for --no-dynamic-linker needed" "$LINENO" 5
-  fi
-  # Default to PIE.
-  libc_cv_pie_default=yes
-  $as_echo "#define ENABLE_STATIC_PIE 1" >>confdefs.h
+  if test "$libc_cv_static_pie" = "yes"; then
+    $as_echo "#define ENABLE_STATIC_PIE 1" >>confdefs.h
 
+  fi
 fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_static_pie" >&5
+$as_echo "$libc_cv_static_pie" >&6; }
 config_vars="$config_vars
-enable-static-pie = $static_pie"
+enable-static-pie = $libc_cv_static_pie"
+
+# Set the `multidir' variable by grabbing the variable from the compiler.
+# We do it once and save the result in a generated makefile.
+libc_cv_multidir=`${CC-cc} $CFLAGS $CPPFLAGS -print-multi-directory`
+
 
 
 

configure.ac

@@ -186,11 +186,11 @@ AC_ARG_ENABLE([profile],
 			     [build profiled library @<:@default=no@:>@]),
 	      [profile=$enableval],
 	      [profile=no])
-AC_ARG_ENABLE([static-pie],
-	      AS_HELP_STRING([--enable-static-pie],
-			     [enable static PIE support and use it in the testsuite @<:@default=no@:>@]),
-	      [static_pie=$enableval],
-	      [static_pie=no])
+AC_ARG_ENABLE([default-pie],
+	      AS_HELP_STRING([--disable-default-pie],
+			     [Do not build glibc programs and the testsuite as PIE @<:@default=no@:>@]),
+	      [default_pie=$enableval],
+	      [default_pie=yes])
 AC_ARG_ENABLE([timezone-tools],
 	      AS_HELP_STRING([--disable-timezone-tools],
 			     [do not install timezone tools @<:@default=install@:>@]),
@@ -1846,7 +1846,7 @@ if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then
   libc_cv_pic_default=no
 fi
 rm -f conftest.*])
-AC_SUBST(libc_cv_pic_default)
+LIBC_CONFIG_VAR([build-pic-default], [$libc_cv_pic_default])
 
 AC_CACHE_CHECK([whether -fPIE is default], libc_cv_cc_pie_default,
 [libc_cv_cc_pie_default=yes
@@ -1859,30 +1859,38 @@ if eval "${CC-cc} -S conftest.c 2>&AS_MESSAGE_LOG_FD 1>&AS_MESSAGE_LOG_FD"; then
   libc_cv_cc_pie_default=no
 fi
 rm -f conftest.*])
-libc_cv_pie_default=$libc_cv_cc_pie_default
-AC_SUBST(libc_cv_cc_pie_default)
-AC_SUBST(libc_cv_pie_default)
+LIBC_CONFIG_VAR([cc-pie-default], [$libc_cv_cc_pie_default])
+
+AC_MSG_CHECKING(if we can build programs as PIE)
+if test "x$default_pie" != xno; then
+  # Disable build-pie-default if target does not support it.
+  AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#ifdef PIE_UNSUPPORTED
+# error PIE is not supported
+#endif]])], [libc_cv_pie_default=yes], [libc_cv_pie_default=no])
+fi
+AC_MSG_RESULT($libc_cv_pie_default)
+LIBC_CONFIG_VAR([build-pie-default], [$libc_cv_pie_default])
+
+AC_MSG_CHECKING(if we can build static PIE programs)
+libc_cv_static_pie=$libc_cv_pie_default
+if test "x$libc_cv_pie_default" != xno \
+   -a "$libc_cv_no_dynamic_linker" = yes; then
+  # Enable static-pie if available
+  AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#ifndef SUPPORT_STATIC_PIE
+# error static PIE is not supported
+#endif]])], [libc_cv_static_pie=yes], [libc_cv_static_pie=no])
+  if test "$libc_cv_static_pie" = "yes"; then
+    AC_DEFINE(ENABLE_STATIC_PIE)
+  fi
+fi
+AC_MSG_RESULT($libc_cv_static_pie)
+LIBC_CONFIG_VAR([enable-static-pie], [$libc_cv_static_pie])
 
 # Set the `multidir' variable by grabbing the variable from the compiler.
 # We do it once and save the result in a generated makefile.
 libc_cv_multidir=`${CC-cc} $CFLAGS $CPPFLAGS -print-multi-directory`
 AC_SUBST(libc_cv_multidir)
 
-if test "$static_pie" = yes; then
-  # Check target support for static PIE
-  AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#ifndef SUPPORT_STATIC_PIE
-# error static PIE is not supported
-#endif]])], , AC_MSG_ERROR([the architecture does not support static PIE]))
-  # The linker must support --no-dynamic-linker.
-  if test "$libc_cv_no_dynamic_linker" != yes; then
-    AC_MSG_ERROR([linker support for --no-dynamic-linker needed])
-  fi
-  # Default to PIE.
-  libc_cv_pie_default=yes
-  AC_DEFINE(ENABLE_STATIC_PIE)
-fi
-LIBC_CONFIG_VAR([enable-static-pie], [$static_pie])
-
 AC_SUBST(profile)
 AC_SUBST(static_nss)
 

manual/install.texi

@@ -146,15 +146,13 @@ Don't build shared libraries even if it is possible.  Not all systems
 support shared libraries; you need ELF support and (currently) the GNU
 linker.
 
-@item --enable-static-pie
-Enable static position independent executable (static PIE) support.
-Static PIE is similar to static executable, but can be loaded at any
-address without help from a dynamic linker.  All static programs as
-well as static tests are built as static PIE, except for those marked
-with no-pie.  The resulting glibc can be used with the GCC option,
--static-pie, which is available with GCC 8 or above, to create static
-PIE.  This option also implies that glibc programs and tests are created
-as dynamic position independent executables (PIE) by default.
+@item --disable-default-pie
+Don't build glibc programs and the testsuite as position independent
+executables (PIE).  By default, glibc programs and tests are created as
+position independent executables on targets that support it.  If the toolchain
+and architecture support it, static executables are built as static PIE and the
+resulting glibc can be used with the GCC option, -static-pie, which is
+available with GCC 8 or above, to create static PIE.
 
 @item --enable-cet
 @itemx --enable-cet=permissive

scripts/build-many-glibcs.py

@@ -1,6 +1,7 @@
 #!/usr/bin/python3
 # Build many configurations of glibc.
 # Copyright (C) 2016-2021 Free Software Foundation, Inc.
+# Copyright (C) The GNU Toolchain Authors.
 # This file is part of the GNU C Library.
 #
 # The GNU C Library is free software; you can redistribute it and/or
@@ -437,15 +438,15 @@ class Context(object):
                                                '--disable-experimental-malloc',
                                                '--disable-build-nscd',
                                                '--disable-nscd']},
-                                      {'variant': 'static-pie',
-                                       'cfg': ['--enable-static-pie']},
-                                      {'variant': 'x32-static-pie',
+                                      {'variant': 'no-pie',
+                                       'cfg': ['--disable-default-pie']},
+                                      {'variant': 'x32-no-pie',
                                        'ccopts': '-mx32',
-                                       'cfg': ['--enable-static-pie']},
-                                      {'variant': 'static-pie',
+                                       'cfg': ['--disable-default-pie']},
+                                      {'variant': 'no-pie',
                                        'arch': 'i686',
                                        'ccopts': '-m32 -march=i686',
-                                       'cfg': ['--enable-static-pie']},
+                                       'cfg': ['--disable-default-pie']},
                                       {'variant': 'disable-multi-arch',
                                        'arch': 'i686',
                                        'ccopts': '-m32 -march=i686',

sysdeps/alpha/configure

@@ -5,4 +5,9 @@
 # symbols in a position independent way.
 $as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
 
+
+# PIE builds fail on binutils 2.37 and earlier, see:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28672
+$as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h
+
 # work around problem with autoconf and empty lines at the end of files

sysdeps/alpha/configure.ac

@@ -4,4 +4,8 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 # With required gcc+binutils, we can always access static and hidden
 # symbols in a position independent way.
 AC_DEFINE(PI_STATIC_AND_HIDDEN)
+
+# PIE builds fail on binutils 2.37 and earlier, see:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28672
+AC_DEFINE(PIE_UNSUPPORTED)
 # work around problem with autoconf and empty lines at the end of files

sysdeps/csky/configure

@@ -2,3 +2,10 @@
  # Local configure fragment for sysdeps/csky.
 
 $as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
+
+
+# PIE builds fail on binutils 2.37 and earlier, see:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28672
+$as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h
+
+# work around problem with autoconf and empty lines at the end of files

sysdeps/csky/configure.ac

@@ -2,3 +2,8 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 # Local configure fragment for sysdeps/csky.
 
 AC_DEFINE(PI_STATIC_AND_HIDDEN)
+
+# PIE builds fail on binutils 2.37 and earlier, see:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28672
+AC_DEFINE(PIE_UNSUPPORTED)
+# work around problem with autoconf and empty lines at the end of files

sysdeps/hppa/configure

@@ -30,3 +30,10 @@ $as_echo "$libc_cv_asm_line_sep" >&6; }
 cat >>confdefs.h <<_ACEOF
 #define ASM_LINE_SEP $libc_cv_asm_line_sep
 _ACEOF
+
+
+# PIE builds fail on binutils 2.37 and earlier, see:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28672
+$as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h
+
+# work around problem with autoconf and empty lines at the end of files

sysdeps/hppa/configure.ac

@@ -19,3 +19,8 @@ else
 fi
 rm -f conftest*])
 AC_DEFINE_UNQUOTED(ASM_LINE_SEP, $libc_cv_asm_line_sep)
+
+# PIE builds fail on binutils 2.37 and earlier, see:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28672
+AC_DEFINE(PIE_UNSUPPORTED)
+# work around problem with autoconf and empty lines at the end of files

sysdeps/ia64/configure

@@ -3,4 +3,9 @@
 
 $as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
 
+
+# PIE builds fail on binutils 2.37 and earlier, see:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28672
+$as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h
+
 # work around problem with autoconf and empty lines at the end of files

sysdeps/ia64/configure.ac

@@ -4,4 +4,8 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 dnl It is always possible to access static and hidden symbols in an
 dnl position independent way.
 AC_DEFINE(PI_STATIC_AND_HIDDEN)
+
+# PIE builds fail on binutils 2.37 and earlier, see:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28672
+AC_DEFINE(PIE_UNSUPPORTED)
 # work around problem with autoconf and empty lines at the end of files

sysdeps/mach/hurd/configure

@@ -49,3 +49,9 @@ fi
 
 # Hurd has libpthread as a separate library.
 pthread_in_libc=no
+
+# Hurd build needs to be updated to support static pie, see:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28671
+$as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h
+
+# work around problem with autoconf and empty lines at the end of files

sysdeps/mach/hurd/configure.ac

@@ -29,3 +29,8 @@ fi
 
 # Hurd has libpthread as a separate library.
 pthread_in_libc=no
+
+# Hurd build needs to be updated to support static pie, see:
+# https://sourceware.org/bugzilla/show_bug.cgi?id=28671
+AC_DEFINE(PIE_UNSUPPORTED)
+# work around problem with autoconf and empty lines at the end of files

sysdeps/microblaze/configure

@@ -0,0 +1,8 @@
+# This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
+ # Local configure fragment for sysdeps/microblaze.
+
+# gcc 11.2.1 and earlier crash with an internal compiler error, see:
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103613
+$as_echo "#define PIE_UNSUPPORTED 1" >>confdefs.h
+
+# work around problem with autoconf and empty lines at the end of files

sysdeps/microblaze/configure.ac

@@ -0,0 +1,7 @@
+GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
+# Local configure fragment for sysdeps/microblaze.
+
+# gcc 11.2.1 and earlier crash with an internal compiler error, see:
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103613
+AC_DEFINE(PIE_UNSUPPORTED)
+# work around problem with autoconf and empty lines at the end of files

sysdeps/sparc/Makefile

@@ -2,6 +2,7 @@
 long-double-fcts = yes
 
 pie-ccflag = -fPIE
+no-pie-ccflag = -fno-PIE
 
 ifeq ($(subdir),gmon)
 sysdep_routines += sparc-mcount